ANSWER:

What they said is totally wrong!

No problem in crossing the miqat without intending to do umrah.

QUESTION: We are living in jeddah.And we were travelling from jeddah to taif just for visiting some parks and entertainment and we travelled from inside makkah boundaries and came back from the same route.Is this permissible? because someone told me that you are not in ihram and you cross the meeqat without any ihram so you have a dam(دم) on you means you have to slaughter a sheep inside haram boundaries…